Authentication Bypass Vulnerability in n8n by n8n.io
CVE-2026-56350

6MEDIUM

Key Information:

Vendor

N8n

Status
N8n
Vendor
CVE Published:
30 June 2026

What is CVE-2026-56350?

The vulnerability in n8n before version 2.8.0 enables authenticated Single Sign-On (SSO) users to disable SSO enforcement via the API. This exploit allows attackers to circumvent established organizational security protocols, including multi-factor authentication mandated by the identity provider, by creating local password credentials. As a result, it poses a risk of unauthorized access and could lead to significant security breaches.

Affected Version(s)

n8n 0 < 2.8.0

n8n 2.8.0

References

https://github.com/n8n-io/n8n/security/advisories/GHSA-vj...
vendor-advisory
https://www.vulncheck.com/advisories/n8n-sso-enforcement-...
third-party-advisory

CVSS V4

Score:
6
Severity:
MEDIUM
Confidentiality:
None
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
Physical
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

stanislavfortaisle
.